| Issue |
A&A
Volume 366, Number 2, February I 2001
|
|
|---|---|---|
| Page(s) | L9 - L12 | |
| Section | Letters | |
| DOI | https://doi.org/10.1051/0004-6361:20000543 | |
| Published online | 15 February 2001 | |
Size determination of the Centaur Chariklo from millimeter-wavelength bolometer observations
Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, 53121 Bonn, Germany
Corresponding author: W. J. Altenhoff, waltenhoff@mpifr-bonn.mpg.de
Received:
27
November
2000
Accepted:
15
December
2000
Using the Max-Planck Millimeter Bolometer Array (MAMBO) at the IRAM 30 m telescope we detected emission at 250 GHz from the Centaur Chariklo (1997 CU26). The observed continuum flux density implies a photometric diameter of 273 km. The resulting geometric albedo is 0.055, somewhat higher than expected from a comparison with most of the other few Centaurs and cometary nuclei for which such data are available.
Key words: comets: general / minor planets, asteroids / radio continuum: solar system
© ESO, 2001
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